Cuspart vs prismCalc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Cuspart
This app offers a professional-grade calculator with advanced math functions, a constants library, and intuitive history tracking. Customize your experience with various color themes and an accessible interface designed for ease of use.
- Basic and advanced arithmetic
- Roots, powers, and logarithms
- Constants library (π, e)
- Operation history
- Customizable color themes
- Accessible UI design
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Cuspart: myCal is a clear, focused calculator for everyday math, scientific calculations, and unit conversions. From a quick calculation to a complex expression, myCal keeps everything readable in one polished workspace. SWITCH MODES WITHOUT THE FRICTION Move between Standard, Scientific, and Convert modes whenever you need them. Start in Scientific mode with advanced tools ready to use, or return to your last workspace instantly. CALCULATE WITH CLARITY * Add, subtract, multiply, and divide with confidence. * Build expressions with parentheses and proper order of operations. * Use percentages, negative values, memory keys, and quick delete. * Keep the full expression visible while you type. * Read results clearly with smart number formatting. * Fix mistakes without restarting your calculation. SCIENTIFIC TOOLS, READY TO GO * Trigonometric functions with degrees and radians. * Square, cube, and arbitrary powers. * Square, cube, and nth roots. * Logarithms including log10, log2, and ln. * Exponentials including 10^x and e^x. * Reciprocals, factorials, absolute values, floor, ceiling, and sign functions. * Hyperbolic functions for advanced calculations. * Instant access to π and e. CONVERT UNITS IN ONE PLACE Convert everyday and technical units without leaving the calculator. * Length, area, weight, volume, temperature, and speed. * Data, energy, time, pressure, force, and power. * Frequency, fuel economy, voltage, resistance, and illuminance. * Concentration and other useful categories. * Currency conversion with clear rate status when rates are available. YOUR HISTORY, AT A GLANCE Keep every expression and result within reach. Review previous calculations, copy useful answers, delete individual entries, or clear your history whenever you want a fresh start. MAKE IT YOURS Choose a look and feel that fits your workflow. * Light, dark, or system appearance. * Calculator fonts designed for clear numbers. * Multiple color palettes. * Custom key colors with Pro. * Large touch targets and readable typography. OPTIONAL PRO FEATURES Upgrade to Pro for custom key colors, additional font styles, exclusive color presets, offline access, and an ad-free workspace — all with a one-time purchase. BUILT FOR FOCUS Cuspart: myCal combines the familiarity of a traditional calculator with the power of a scientific workspace. Whether you're studying, working, converting units, or handling everyday math, myCal keeps your calculations clear, fast, and organized.
prismCalc
This app offers a visually appealing and functional calculator for everyday financial tasks like splitting bills, calculating discounts, and comparing loan payments. It provides live calculation previews, a history of recent results, and various everyday tools.
- Live calculation preview
- History of recent results
- Tip and split bill calculator
- Discount calculator
- Loan calculator
- Unit converter
- Customizable themes
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Split a dinner bill in seconds. Check a discount before you buy. Compare loan payments side by side. prismCalc is the everyday calculator for the math that happens outside a spreadsheet — beautiful glass design, no ads, no tracking. **LIVE CALCULATION PREVIEW** • See the running result while you build an expression • Keep enough context on screen to catch mistakes before pressing equals **KEEP RECENT RESULTS CLOSE** • Dynamic Island can keep your last calculation visible while you switch apps • Widgets and quick actions help you get back to recent math without digging through the app • History lets you reuse prior calculator, tip, discount, loan, and conversion entries **CORE CALCULATOR** • Large calculator buttons with haptic feedback • Memory functions (M+, M−, MC, MR) with indicator dot • Long-press display to copy, double-tap to paste • Standard or alternate key layout — choose what feels natural • Display gestures for backspace, undo backspace, recall, clear, copy, and paste **EVERYDAY TOOLS (Pro)** • Tip & Split — tips, equal splits, rounded per-person totals, and by-share splits for uneven groups • Discount Calculator — original price, savings, sale price, and tax • Loan Calculator — mortgage, auto, student, and personal loans. Mortgages lead with the total monthly payment, with principal + interest and escrow (property tax, insurance, HOA) as immediate context. Includes payoff planning, extra-payment what-ifs, and full amortization details • Unit Converter — 38 length, weight, volume, and temperature units, with Metric, US Customary, and Imperial results grouped clearly **HISTORY & NOTES (Pro)** • Save, review, search, and filter past calculations • Name and pin saved calculations so important bills, payoff plans, and conversions are easier to find later • Mortgage scenarios save with full escrow context (property tax, insurance, HOA, escrow toggle) so reopening a saved payoff plan restores the exact inputs • Add notes to any calculation • Share calculations with notes via Messages, Mail, or any app • Lock important entries so they cannot be accidentally deleted • Optional iCloud Sync across devices **ALWAYS WITHIN REACH** • Home Screen widgets — small, medium, and large (all free) • Lock Screen widgets — accessory circular, rectangular, and inline (free) • Control Center widgets — quick actions for calculator, tip, split, discount, unit converter, loan, and copy last result • Siri Shortcuts — calculate tips, split bills, convert units including volume, and recall recent results • Apple Watch companion — calculator, tip, discount, and split right on your wrist with all 10 themes synced **THEMES AND LAYOUT** • Animated mesh gradient backgrounds with true glassmorphism • 4 free themes (Aurora, Calming Blues, Dark Glass, Pearl) plus 6 Pro themes • Square or round buttons, plus standard or alternate key layout **PRIVACY FIRST** • No tracking, no analytics, no ads, no account required • Your data stays on your device unless you choose optional iCloud Sync **ACCESSIBILITY** • VoiceOver, Dynamic Type, Increase Contrast, Reduced Motion, and alternative key layout Built by a solo developer. Thanks for supporting independent apps. Disclaimer: Calculations provided by prismCalc are for informational and illustrative purposes only. Results are estimates and do not constitute financial advice, guaranteed loan terms, or a commitment to lend. Actual rates and payments may vary based on lender-specific criteria. LaClair Technologies is not a financial institution.
Screenshots
Verdict
The clearest difference is ads: prismCalc at none against Cuspart's shown. prismCalc also leads on update cadence (weekly vs every 4 months) and ratings volume (4 vs 1). Cuspart's advantage is iOS requirement (16.0 vs 26.0). On price, rating, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Cuspart sells 1 one-off in-app purchase and prismCalc sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for Cuspart against 5.0 for prismCalc. Both are backed by a comparable volume of ratings — 1 and 4 respectively.
Cuspart ships an update every 4 months, prismCalc weekly. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.
| Parameter | Cuspart | prismCalc |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (4 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 4 — better |
| Update frequency | Every 4 months | Weekly — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPad | iPhone, iPad, Mac, Apple Watch — better |
| Requires iOS | 16.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 13 MB | 70 MB |
| Age rating | 12+ | 4+ |
| Developer | Mustafa Tolga DALBUDAK | Patrick LaClair |
Customer experience
Cuspart
prismCalc
In-app purchases
Cuspart
- myCal Pro$2.99
prismCalc
- prismCalc Pro$2.99









